Disintegrating machine



ug. 6, 1929. E. ROTH 1,723,443

*DISINTEGRATING MACHINE Filed OCT.. l2, 1925 Patented Aug. 6, 1929.

UNITED STATES ERNST ROTH, F LAUTAWEBX, GERMANY.

nrsm'rnona'rrne MACHINE.

Application led October 12, 1925, Serial No. 82,182, and in German-y November 1, 1924.

My invention relates to an improved disinte rating machine.

he machines of this type as hitherto constructed are objectionable for the reason that disintegration is effected therein by elements or means, which are either integral parts of the machine, such as walls, ribs and the like or individual parts such as balls and the like, which are placed in the machine for concussive purposes. As these means or elements are subjected to heavy strains and stresses and therefore considerable wear they must necessarily be made of a hard material.

More particularly my invention refers to a disintegrating machine of the stated type,

having a biconical casing composed of or constituted by two hollow conical parts disposed with their bases or flaring ends opposite each other and adapted to be revolved in opposed directions and the object of my invention is to overcome in a machine of this kind, the hereinbefore stated disadvantages.

With this object in view I provide on the inner surfaces of the two hollow conical parts or discs a number of radial ribs adapted to prevent the materials from movin over the said parts or discs, and to only gui e the materials towards and into the working zone of the machine. This zone is situated in the vi- 3o cinity of and between the base surfaces of the two conical parts or discs, and the material is guided into this zone from both sides through the agency of the stated radial ribs, so that the material supplied by the one disc will meet with the material supplied by the other disc, with the result that the particles will rub against each other and be reduced to powder owing to the mutual rubbin xor grinding action of the particles themse ves, 4o due to the centrifugal action and the opposed rotary motion imparted by the two conical discs, constituting the casing.

It will be seen that the radial ribs act to feed the material, under the action of centrifugal force, towards the bases or flaring ends of the two conical discs, while rotating together with and at the saine speed as the conical parts of the casing, so that the disintegration of the material mainly occurs in the above mentioned base-zone w ere the' particles meet, whilst being revolved with great speed in opposed directions, by way of the highly intensive self-rubbing action result- Aing from the peculiar motion imparted to the particles.

As the material is prevented by the said ribs from moving freely all over and about the inner surfaces of the two hollow conical discs, -the latter do not partake in the disintegrating action and, therefore are not subjected to wear, so that they may be made or ping the same with reinforcing rings, be-

. tween the two rings an annular slit or gap is arranged for the pulverized material to escape from the casing and an annular channel or trough round about the slit or gap for the reception of the pulverized material and for conveying the same to a point preferably near .the lower end of the casing.

With the above recited object in view, the invention resides in the novel construction set forth in. the following specification, particularly pointed out in the appended claims and illustrated in the accompanying drawings, it being understood that the right is reserved to embodiments other than those actually illustrated herein to the full extent indicated by the general meaning of the terms, in which the claims are expressed.

The accompanying drawings, forming a part of this specification, show for purpose of exemplification two preferred forms and manners, in which the invention may be embodied and practised:

Figure 1 is a diagrammatic view in longitudinal section of the machine partly broken off and having a hollow shaft both for the transmission of rotary movement and for the supply of material to the casing;

Figure 2 is a similar view of a modification including a supplying or charging hopper and a solid shaft, only one half of the casin being shown;

Figure 3 is an end view thereof with a portion of the hollow conical disc broken away.

In the embodiment shown in Figure 1 the machine comprises a casing constituted by two independent hollow conical discs a1 and a2 located with theirilaring base ends or peripheral edges towards and in the close vicinity of each other and having each a number of radial ribs b1 and b2 respectively. The peripheral base or edge surface of the disc a1 and a2, is grooved and exchangeable reinforcing rings c1 or c?, are inserted into the groove, so that a small gap or slit ,s will remain to separate the discs a1 and a2 from each other. nected with a hollow shaft all and d2 respectively, so as to communicate with the latter. The connection of the parts may be effected by means of annular iianges f1 and f2 at the ends of the shafts and with the aid of bolts, not shown. Each shaft Z1 and d2 is supported in suitable bearings k1, 1 and k2, 2

` respectively, and equipped with a belt pulley g1 and g2, respectively, of usual construction for the driving purpose. A conveying screw e1 and e2 is provided in each hollow shaft all and d2, respectively for supplying the material to the casing.

As above stated an annular channel or trough is to be provided for the reception of the pulverized material, escaping through the slit or gap s and for conveying the same to a container of any suitable shape. This annular trough is not shown in the drawings, because it may be of any appropriate construction and arrangement known in the art, so that those, to whom this specification is addressed, will readily understand the shape and disposition of these subordinate means, although the latter are not shown.

The operation is as follows:

The material, e. g. bauxite, to be disintegrated, is supplied in any suitable manner to the hollow shafts il and d2, and the conveying screws e1 and e2, which are driven by any appropriate means, not shown, act to slowly feed the material towards and into the biconical casing. The' two pulleys g1 and g2 are driven to revolve in opposite directions at a ,speed of say 3000 revolutions per minute. Upon entering the casing the material is prevented by the ribs b1 and b2 from following the revolutions of the easing, but is conveyed by the ribs, under the action of the progressively increasing centrifugal force, from the apices of the two conical discs towards the flaring bases thereof, that is to say towards the peripheral portion of the casing o'r the working zone of the machine which, as hereinbefore mentioned, lies inthe vicinity of and between the opposed base parts of the two conical discs. In this zone the particles of the material supplied by the two revolving dises meet and, as they are revolved with the high speed, at which the machine runs, they are reduced to a powder,

Each disc is rigidly con`\ maaafie or funnel, so that' the hollow shaft and the conveying screws may be dispensed with and a solid shaft is employed.v In this embodiment some of the radial ribs are shaped and arranged vto support the conical discs. To this end they are elongated, extend inwards to form a hub keyed to the shaft'and preferably the disc, the guiding ribs, the supporting ribs and the hub are cast integral with each other to form a unit. In the embodiment shown there are three supporting ribs symmetrically arranged at a distance of 120o apart from each other. The supplying hopper or funnel is arranged to discharge its contents into the cylindrical space thus formed, the arrangement being such that the hopper or funnel discharges in the direction, in which the hollow conical disc is driven to revolve.

As will be seen in Figures 2 and 3 the hollow, conica-l disc A, the guiding ribs It, the supporting ribs B and the hub C are hollow, conical disc A, the guiding ribs lit, firmly connected to the solid shaft W by means of a key, not shown. The funnel or hopper I) is shaped to form a sloping tube E with its'mouth projecting into the free cylindrical space F of the conical disc, so that the material to be disintegrated will be discharged into the space F and thence travel into the several guiding sections formed by the guiding ribs R and also ribs B in order to be guided in radial direction to the peripheral part of the conical disc and to meet the material supplied and guided in the same manner in the counter-disc, not shown for the disintegrating purpose, as described hereinbefore with reference to the embodiment illustrated in Figure 1.

From the foregoing description, it will be seen that simple and eiiicient means are herein provided for accomplishing the object of the invention, and it is believed that the admembers and have nothing vantages and novel features of my invention l supported and rigidly connected with the other disc, means for revolving the two shafts together with their discs in opposed directions, and radial ribs in the said conical discs, the arrangement being such that the flaring ends of the two conical discs are opposite and adjacent to each other with a small annular gap or slit therebetween.

2. A disintegrating machine, comprising a casing composed of twohollow, conical discs, a shaft duly supported and rigidly connected with the one disc, a second shaft duly supported and rigidly connected with the other disc, means for revolving the two shafts together with their discs separately in opposed directions, radial ribs in the said conical discs, aud reinforcing rings on the two conical discs arranged with their glaring ends opposed each other, so as to leave a small annular gap or slit therebetween.

3. A disintegrating machine, comprising a casing composed of two hollow, conical discs, a shaft duly supported and rigidly connected with the one disc, a second shaft duly supported and rigidly connected with the other disc, means for revolving they two shafts together with their discs separately in opposite directions, radial ribs in the said, conical discs, which are arranged with their flaring ends adjacent to and opposite each other so as to leave ain annular gap therebetween and eX- changeable reinforcing rings inserted into the said two conical discs and an annular slit therebetween.

4: A disintegrating machine comprising a casing composed of two hollow, conical discs, a shaft duly supported and firmly connected with the one disc, a second shaft duly supported and firmly connected with the other disc, means for revolving the two shafts together with their discs separately in opposite irections, radial guiding ribs in the said discs partly elongated to meet and form a. hub for the connection between the conical disc and its shaft, and a separate charging hopper in connection with each conical disc, the arrangement being such that the flaring ends of the two conical discs are opposite and adjacent to each other with an annular gap therebetween.

5. A disintegrating machine, comprising a casing composed of two hollow conical discs, a shaft duly supported and rigidly attached to the one disc, a second shaft duly supported and firmly attached to the other disc, means for revolving the two shafts together with their discs separately in opposite directions, radial guiding ribs in the said hollow discs partly elongated to meet and form a hub for the connection between the conical disc and its shaft, a separate charging hopper in connection with each conical disc, and reinforcing rings on the two conical discs arranged with their flaring ends opposite each other so as to leave an annular slit therebetween.

6.` A disintegrating machine, comprising a casing composed of two hollow, conical discs arranged with their free flaring ends, adjacent to and opposite each other with an annular slit therebetween, a hollow shaft duly supported and rigidly connected with the one disc for communication therewith, a second hollow shaft duly supported and rigidly connected with the other shaft for communication therewith, means for revolving the two hollow shafts with their discs separately in opposite directions, radial ribs 1n the said two conical discs, reinforcing rings at the flaring ends thereof, and conveying screws in the said hollow shafts, substantially as and for the purpose set forth.

In witness whereof I aix my signature.

ERNST ROTH. 

